Who said "I did this. It's all my fault."?

This quote is attributed to Scarlet Witch (WandaVision).

I did this. It's all my fault. - Scarlet Witch (WandaVision)

"I did this. It's all my fault."

Scarlet Witch (WandaVision)

"I can't feel you. I can't touch you. I don't know how to say goodbye to that."

"What is grief, if not love persevering?"

"I don't need your pity."

"You can't just take him away from me."